Counter-Strike Global Offensive?

A post on the Steam Users' Forums points to posts on the ESEA Facebook Page, ESEA News, reddit, and cadred.org saying that Valve is working on a Counter-Strike game called Counter Strike: Global Offensive. This has inspired all sorts of speculation, which may be cleared up soon, as the post says we should expect more information on this today. The indication that this is credible comes from Valve's Jess Cliffe, as the first post referred to the game as Counter Strike: Global Operation, and Cliffe posted a correction saying: "Counter Strike: Global Offensive." Thanks Crispydave via ESFI World.